1967 PONTIAC GTO/GRAND PRIX/ FIREBIRD 400 hi compression motor with 670 heads On Ebay

https://www.ebay.com/itm/1967-PONTI...400-hi-compression-motor-with-670-heads?

Wow, gives me hope for when I remove and sell my 670 heads that were just gone through a couple years ago. Looks like those heads had a lot of rust on them at some point judging by the looks of the texture around the numbers.